Combine like terms.3x4 + 7x4 - 8x4
A. 2x12
B. 2x4
C. -168x4
D. Can't be simplified
Answer: B
Mathematics
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Find the perimeter.
A. 84 ft B. 124 ft C. 88 ft D. There is not enough information given.
Mathematics
Find all the factors for the number.45
A. 1, 3, 5, 15, 45 B. 1, 2, 3, 5, 9, 15, 30, 45 C. 1, 3, 5, 9, 15, 45 D. 1, 3, 5, 9, 15, 30, 45
Mathematics
Graph the inequality.y > 
x + 4
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.In 1990, the population of a country was estimated at 4 million. For any subsequent year the population, P(t) (in millions), can be modeled by the equation 
where t is the number of years since 1990. Estimate the year when the population will be 21 million.
A. approximately the year 2088 B. approximately the year 2093 C. approximately the year 2041 D. approximately the year 2016
Mathematics