Solve.Two plumbers make house calls. One charges $90 for a visit plus $40 per hour of work. The other charges $70 per visit plus $50 per hour of work. For how many hours of work do the two plumbers charge the same?
A. 2 hr
B. 2.5 hr
C. 1.5 hr
D. 1 hr
Answer: A
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Name the highlighted angle using the three-letter form of identification.
A. ?INE or ?ENI B. ?N C. ?CNL or ?LNC D. ?CNI or ?INC
Provide an appropriate response.Some adults said they could "tell the difference between the namebrand chocolate chips and the generic brand chocolate chips." How might students design a study to test whether the adults could tell the difference between types of chocolate chips if the students were (a) elementary-grade students? (b)middle-grade students?
What will be an ideal response?
Solve the problem.The volume of wood in a tree varies jointly as the height of the tree and the square of the distance around the tree trunk. If the volume of wood is src="https://sciemce.com/media/4/ppg__sas0515192236__f1q49g5.jpg" alt="" style="vertical-align: -4.0px;" /> around the trunk?
A. 89.64 ft3
B. 84.64 ft3
C. 80.64 ft3
D. 72.64 ft3
when the height is 
and the distance around the trunk is 
what is the volume of wood obtained from a tree that is 
tall having a measurement of
Solve.A newspaper carrier has $4.30 in change. He has two more quarters than dimes but three times as many nickels as quarters. How many coins of each type does he have?
A. 11 quarters, 9 dimes, 33 nickels B. 9 quarters, 7 dimes, 27 nickels C. 9 quarters, 11 dimes, 27 nickels D. 27 quarters, 25 dimes, 9 nickels