Malcolm his father carry boxes into the warehouse. he brings in 4 boxes that each contain 18 cell phones. he also brings in 3 boxes of headphones. there are 12 sets of headphones in each box.

which number sentence can be used to find how many more cell phones malcolm carried in than headphones?

a.
4 × (18 – 12) = p

b.
7 × (18 – 12) = p

c.
(4 × 18) – (3 × 12) = p

d.
(4 – 3) × (18 – 12) = p

The late fee for library books is $2.00 plus 15¢ each day for a book that is late. if maria’s fee for a late book was $3.20, write and solve a linear equation to find how many days late the book was.

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).