what is the value of 4a3 – 2b2 + 5 when a = 3 and b = −2? which is equal to 33 • 35? a. 3^−2 b. 3^2 c. 3^8 d. 3^15 (i think its c( above number 2)( the first picture wants to know what the blank is: 11^what)which is equal to (second pic) ? a. 10−36 b. 10−4 c. 109 d. 1015

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?