Answer:
153.94
Step-by-step explanation:
A= r ^2
A=
* 7 ^2
A= 153.94
Answer:
Ann's mileage is better
Step-by-step explanation:
first to find tom's car mileage is 290/32.5=12.5
and to find Ann's 225/15=15
so Ann's better
Answer:
29/12
Step-by-step explanation:

7 * 3 / 4 *3 = 21/12
2 * 4 / 3 * 4 = 8/12

Hope this helps!
For question 8, you'll have to calculate the price for three lamps and the sofa together. Take the total price of the items and multiply the percentage.
For question 9, the formula for simple interest is price(P) x rate(R) x time(T) / 100. Put in the information given:)
((-5) - 7) / (0-2) = slope because equation for slope is y2 - y1 / x2 - x1. Then the y-intercept is already given. So slope is -12/-2 = 6 so, y= mx + b, meaning mx is slope of -6x and b being -5. Therefore the equation is y = -6x - 5. Hope this helps!