Solve the problem.Tracy can wallpaper 5 rooms in a new house in 40 hours. Together with her trainee they can wallpaper the 5 rooms in 23 hours. How long would it take the trainee working by herself to do the job?
A. 40 hr
B. 95 hr
C. 110 hr
D. 55 hr
Answer: D
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Find the real solutions, if any, of the equation. Use the quadratic formula.4x = 1 + 
A. {- 
, 
}
B. {
, 
}
C. {
}
D. no real solution
Find the inverse function of f. State the domain and range of f.f(x) = 
A. f-1(x) = 
; domain of f: {
x ? -5}; range of f: {
y ? 
}
B. f-1(x) = 
; domain of f: {
x ? -5}; range of f: {
y ? 3}
C. f-1(x) = 
; domain of f: {
x ? -5}; range of f: {
y ? - 3}
D. f-1(x) = 
; domain of f: {
x ? -5}; range of f: {
y ? 5}
Find the indicated matrix.4A, where A = 
A. 
B. 
C. 
D. 
Write the sentence as an equation containing parentheses. Solve the equation.
At an outdoor concert, the staff adds 4 seats to each row of x seats. There are 25 rows altogether, and there are 1,200 seats altogether. How many seats, x, were in the original rows?
