Evaluate (-b)^2 for a = 5, b = -4, and c = 2.

a -4
b 16
c -16

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Given the sequence 7, 14, 28, 56, which expression shown would give the tenth term? a. 7^10 b. 7·2^10 c. 7·2^9

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55