Write the word phrase as an algebraic expression. Use x to represent the unknown number.The product of -5 and the sum of a number and 36
A. -5x + 36
B. -5 + 36x
C. -5(x + 36)
D. -180x
Answer: C
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Match the differential equation with the appropriate slope field.y' = 
A. 
B. 
C. 
D. 
Use the indicated formula to find the sum.Use S = 
to find the sum of 1 + 2 + 3 + . . . + 825.
A. 339,900 B. 339,076 C. 340,725 D. 340,312
Solve the problem.In a study of 135 women, roughly half took estrogen as well as calcium and vitamin D supplements and received regular dental checkups. The remaining women received the supplements and the checkups but substituted a sugar pill for the estrogen. Those who received the estrogen had an average 3.6 percent gain in bone density compared to a 0.2 percent bone density improvement in those taking the sugar pill. This study can best be described as
A. a survey using quota sampling. B. a controlled placebo experiment. C. a census. D. a survey using simple random sampling. E. the placebo effect.
Find the absolute value.-
A. 0 B. 24.1 C. -24.1 D. 48.2