Evaluate the expression for the given replacement values. Write the answer in simplest form.x + yz for x = 
, y = 
, z = 
A. 
B. 
C. 
D. 
Answer: C
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Find the exact value. If any are not defined, write undefined.cos(-540)°
A. -1 B. 0 C. 1 D. Undefined
Evaluate.Let a = 3i, b = i + j. Find 4a + b.
A. 11i + j B. 13i + j C. 13i + 4j D. i + 13j
Solve the problem.At the beginning of the month, Christopher had a balance of $171 in his checking account. During the next month, he wrote a check for $28, deposited $85, and wrote another check for $74. What was his balance at the end of the month?
A. -$154 B. $16 C. -$16 D. $154
Solve the problem.Bruce is a retired carpenter who builds patio chairs and dog houses, which he sells at his local flea market. It takes him 4 hours to build a dog house and 3 hours to build a patio chair. Bruce can work no more than 35 hours per week, and he must produce more chairs than dog houses. Write a system of inequalities to describe this situation. Use D for the number of dog houses and P for the number of patio chairs produced in a week.
A. 
P ? 0
D ? 0
B. 
P ? 0
D ? 0
C. 
P ? 0
D ? 0
D. 
P ? 0
D ? 0