What is the exact volume of a sphere that has a radius of 8.4 in.?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Josephine has a great garden with and area of 2x2 + x - 6 square feet