Simplify using the product rule of exponents.2a ? 8a2
A. 16a4
B. 2a + 8a2
C. 16a3
D. 10a3
Answer: C
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Use the check register find the ending balance.Mary Dunn had a balance of 
in her checking account before writing three checks and making two deposits. On 
she wrote check 
to Dr. Crandal for 
and check 
to Express Framing
for 
Then on 
she made a 
deposit, and wrote check 
to Big Electronics for 
On 
she made a 
check deposit. Record the checks and deposits in Mary's check register, and then find the ending balance.
A. $8266.52
B. $7141.24
C. $7314.40
D. $7020.25
Find an equation of variation for the given situation.y varies jointly as x and the square of z and inversely as w , and y = 
when 
and 
A. y = 
B. y = 
C. y = 
D. y = 
Solve.
+ 
= 4
A. -2
B. 0
C. 2, -2
D. 
, -2
Find the y-intercept of the polynomial function.f(x) = 2x - x3
A. 0 B. -1 C. -2 D. 2