If i scored 96% in my math test and there was 50 questions, how many did i answer correctly?

Which expression is equivalent to 5r6141 2r+st6

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6