Multiply and Simplify: (5a+7b)(3a−8b)
Question 2 options:
15a2−19ab−56b2
15a2+21ab−56b2
15a2−56b2
15a2−40ab−56b2

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Interpret the following expression (5y^2-7)^3/(2y)^2

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.