A computer recorded the altitude of a helicopter after takeoff. The helicopter's altitude after 10 s was 225 ft, and its altitude after 30 s was 135 ft. What are the rate of change and the initial value for the function? Write an equation in slope-intercept form to model the helicopter.

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

Find the missing variable for a parallelogram: a = latex: 32in^2 32 i n 2 h = b = 6.3 in (1in=2.54cm)

What number is 7 units left of -15?