Help please! 12 POINTS!
Solve Linear Equation: px + q = r
Choose all that are correct.

a.) 5x + 10 = 12
x= 5/2

b.) 3x + 10 = 8
x= 2/3

c.) 9x + 15 = 36
x= 7/3

d.) 8x + 12 = 24
x= 3/2

50 points! antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

Which equation represents the partial sum of the geometric series?

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?