Math

simplify: (3r² + 7r + 1) + (4r² - 8r - 2)

a. 7r² + 15r - 1
b. 7r² - r - 1
c. 7r² - 15r - 3
d. -r² - r - 1

Ascale drawing of a lake has a scale of 1 cm to 80 m. if the actual width of the lake is 1000 m what is the width of the lake on the scale drawing

Afunction is given: f(x)=3x+12 a. determine the inverse of this function and name it g(x) b. use composite functions to show that these functions are inverses. c. f(g(– explain: what is the domain?

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32