Hi I need help with this exercise, I hope and you can solve it quickly, my grades are in your hands! Find the six trigonometric values. Give exact answers. 13. 0 = cos^-1 (3/7) ​

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.