Reference no: EM133228797
1. Pamela is cooking a roast for a 5.30 pm dinner tonight. She needs to set a delay timer on her oven. The roast takes 1 hour & 20 minutes to cook. The time right now is 2:20 pm . How long of a delay must she set the oven for (before it automatically turns on & starts to cook the roast)?
2. In 2010, 266 million North Americans were using the internet, which represented a 146.3% increase in internet users over the year 2000. How many North American Internet users were there in 2000?
3. In 2011, the Canadian federal tax rates were 0% on the first $10,527 of gross income earned, 15% on the next $3,1017, 22% on the next $41,544, 26% on the next $45,712, and 29% on anything more. If a taxpayer paid $28,925.35 in federal tax, what was her gross annual income for 2011?
3. An accountant is trying to allocate production costs from two different products to their appropriate ledgers. Unfortunately, the production log sheet for last week has gone missing. However, from other documents, he was able to figure out that 1,250 units in total were produced last week. The production machinery was run for 2,562.5 minutes, and he knows that product A takes 1.5 minutes to manufacture while product B takes 2.75 minutes to manufacture. How many units of each product were produced last week?
4. Jacob owns 15,000 shares in a corporation, which represents 2% of all issued shares for the company. He sold off his shares to another investor for $7,800. What is the total value for all of the shares issued by the Company?
5. Two cellphone companies are offering different rate plans. Rogers is offering $19.99 per month, which includes a maximum of 200 weekday minutes plus $0.35 for every minute above the maximum. Telus is offering $39.99 for a maximum of 300 weekday minutes, weekday minutes, but it charges $0.10 for every minute above the maximum. Above how many minutes would Telus be the better choice?
6. Marianne, William, Hendrick, and Charlotte have all decided to go into business together. They need $175,000 in initial capital funding. William was able to contribute 20% less than Marianne, Hendrick contributed 62.5% more than William, and Charlotte contributed $5,000 less than half as much as Marianne. How much did each partner contribute to the initial funds?
7. Simplify the following
( -3Z)^3/(3Z^2)^2*(2Z^3)^-4