Use your estimation skills to pick the most reasonable answer. Do not solve the problem.133.55 + 84.0027
A. 2175.527
B. 21.75527
C. 217.5527
Answer: C
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Find the slope of the line.4y - 2x = 7 + 3y - 2x
A. 1 B. 7 C. 0 D. Undefined
Find the x- and y-intercepts of the graph of the given equation.y = x2 + 4x - 7
A. x-intercepts: -2 - 
, -2 + 
; y-intercept: -7
B. x-intercepts: -1 - 
, -1 + 
; y-intercept: -7
C. x-intercepts: none; y-intercept: -7
D. x-intercepts: 1 - 
, 1 + 
; y-intercept: -7
Solve the problem.The pH scale is used by chemists to measure the acidity of a solution. It is a base 10 logarithmic scale. The pH, P, of a solution and its hydronium ion concentration in moles per liter, H, are related as follows: H = 10-PFind the formula for the rate of change 
.
A. 
= -(ln P)10-P
B. 
= - 
C. 
= -(ln 10 )10-P
D. 
= (ln 10 )10-P
Divide and simplify.
÷ 
A. 
B. 
C. 
D. 