Solve.The time T necessary to make an enlargement of a photo negative is directly proportional to the area A of the enlargement. If 84 seconds are required to make a 3-by-4 enlargement, find the time required for a 7-by-5 enlargement.
A. 210 sec
B. 280 sec
C. 245 sec
D. 315 sec
Answer: C
Mathematics
You might also like to view...
Simplify.8log8 (7x)
A. 7x B. 87x C. 1 D. 8
Mathematics
Provide an appropriate response.Determine BC if AC = 4.71 ft and AB = 10.28 ft. Round to the nearest hundredth.
A. 5.57 ft B. 2.32 ft C. 9.14 ft D. 11.31 ft
Mathematics
Find the indefinite integral.
Mathematics
Find the value of the expression.log7 79
A. 1 B. 9log77 C. 9 D. 79
Mathematics