An account earns simple annual interest. (a) Find the interest earned. (b) Find the balance of the account. 1. $750 at 6% for 3 years
2. $5000 at 4.5% for 6 months
3. $200 at 15% for 5 years Find the annual interest rate.
4. I = $30, P = $150, t = 2 years
5. I = $60, P = $500, t = 18 months
6. I = $150, P = $3000, t = 4 years Find the amount of time.
7. I = $42, P = $800, r = 3%
8. I = $2000, P = $5000, r = 8%
9. I = $595, P = $14,000, r = 8.5%
pls take ur time to help.

What does it mean by solve the exponential equation for x?

The table shows the relationship between the number of cups of cereal and the number of cups of raisins in a cereal bar recipe: number of cups of cereal number of cups of raisins 8 2 12 3 16 4 molly plotted an equivalent ratio as shown on the grid below: a graph is shown. the title of the graph is cereal bars. the horizontal axis label is cereal in cups. the x-axis values are 0, 20, 40, 60, 80,100. the vertical axis label is raisins in cups. the y-axis values are 0, 10, 20, 30, 40, 50. a point is plotted on the ordered pair 40,20. which of these explains why the point molly plotted is incorrect? (a) if the number of cups of cereal is 40, then the number of cups of raisins will be10. (b)if the number of cups of raisins is 40, then the number of cups of cereal will be10. (c) if the number of cups of cereal is 40, then the number of cups of raisins will be 80. (d) if the number of cups of raisins is 40, then the number of cups of cereal will be 80.

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .