Simplify the decimal expression.6.4 - 1.8
A. 5.7
B. 5.6
C. 4.5
D. 4.6
Answer: D
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Find the largest open interval where the function is changing as requested.Increasing y = (x2 - 9)2
A. (-?, 0) B. (-3, 0) C. (3, ?) D. (-3, 3)
Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.loga8x3yz5
A. 8 + logay + logaz5 B. 15 loga8xyz C. loga8 - 3 logax - logay - 5 logaz D. loga8 + 3 logax + logay + 5 logaz
The function f is one-to-one. State the domain and the range of f and f-1. Write the domain and range in set-builder notation.f(x) = 
A. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
B. f(x): D is all real numbers, R is all real numbers;
f-1(x): D is all real numbers, R is all real numbers
C. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
D. f(x): D = 
, R = 
;
f-1(x): D = 
, R = 
Solve.If 2 ft 5 in. of material is used to manufacture one scarf, how much material is needed for 7 scarves?
A. 20 ft 3 in. B. 16 ft 11 in. C. 14 ft 5 in. D. 14 ft 7 in.