Solve the problem. Round to the nearest cent unless otherwise noted.The amount of markup on a store item is $18. Find the cost to the store if the markup is 20%.
A. $3.60
B. $15.00
C. $90.00
D. $21.60
Answer: C
Mathematics
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Simplify the expression. Assume all variables represent positive real numbers.
A. 
B. 
C. 5
D. 5
Mathematics
Solve.A metal rod changes in length by 0.82 mm for every 1°C change in temperature. If it expands when heated and contracts when cooled, express its change in length as a signed number as the temperature changes from 34°C to 25°C.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Subtract.-7 - (-7)
A. -14 B. -7 C. 14 D. 0
Mathematics
Graph the polynomial function. Factor first if the expression is not in factored form.f(x) = x(x + 1)(x - 2)3
A. 
B. 
C. 
D. 
Mathematics