I need Help 20pts. The musical tone known as “middle C” completes one cycle in 132cm.
The note one half-step higher, D-flat, completes one cycle in 124cm.

Which note could be modeled by the function y=sin pi/62 0.

A. middle C
B. D-flat

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?