Solve each problem.Le Boulangerie, a bakery, sells four main items: sweet rolls, bread, cakes, and pies. The amount of each ingredient (in cups, except for eggs) required for these items is given by matrix A. Eggs Flour Sugar Shortening Milk
= A
Suppose a day's orders consist of 20 dozen sweet rolls, 200 loaves of bread, 50 cakes, and 60 pies. Write the orders as a 1 × 4 matrix and, using matrix multiplication, write as a matrix the amount of each ingredient needed to fill the day's orders.
A. 
B. 
C. 
D. These matrices cannot be multiplied.
Answer: C
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Solve the problem.Jon throws all his nickels and dimes in a jar at home each day. He counted all his coins one day and found that he had collected $42.70. If there were five times as many nickels as dimes, how many of each coin does he have?
A. 610 dimes; 605 nickels B. 610 dimes; 122 nickels C. 122 dimes; 610 nickels D. 122 dimes; 5 nickels
Evaluate the integral.
x dx
A. x cos-1x - 
+ C
B. x cos-1x - 2
+ C
C. x cos-1x - 
+ C
D. x cos-1x + 
+ C
Use a proportion to solve the problem. Round to the nearest tenth as needed.A triangle drawn on a map has sides of lengths 8 cm, 10 cm, and 15 cm. The shortest of the corresponding real-life distances is 136 km. Find the longest of the real-life distances.
A. 170.0 km B. 255.0 km C. 160.0 km D. 265.0 km
Find the value of x or y so that the line through the pair of points has the given slope.(x, 2) and (5, 8); m = 1
A. 1 B. -2 C. -1 D. 2