Solve.The circle graph shows the fraction of books read by grades one through five. What fraction of books was read by the first and fourth grades combined?
A. 
B. 
C. 
D. 
Answer: B
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A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given.A = 
bh; b = 5, h = 6
A. 11.5 B. 15 C. 30 D. 11
Solve by the substitution method.-0.5x - 0.1y = 1.40.5x - 0.3y = -1.8
A. {(0.3, 5.5)} B. ? C. {(-3.6, 3.3)} D. {(-3, 1)}
Solve the problem.The volume of a rectangular box with square base and a height of 5 feet is V(x) = 5x2, where x is the length of a side of the base. Find the instantaneous rate of change of volume with respect to x when x = 3 feet.
A. 45 ft3/ft B. 30 ft3/ft C. 15 ft3/ft D. 6 ft3/ft
Encode or decode the given message, as requested, numbering the letters of the alphabet 1 through 26 in their usual order.Use the coding matrix A = 
to encode the message LIFE.
A. 
B. 
C. 
D. 