If a single cook can bake 3 large cakes per hour and the kitchen is available for 4 hours, a single cook can bake 3 x 4 = 12 large cakes during that time. 21 large cakes are needed for the party so \( \frac{21}{12} \) = 1\(\frac{3}{4}\) cooks are needed to bake the required number of large cakes.

If a single cook can bake 15 small cakes per hour and the kitchen is available for 4 hours, a single cook can bake 15 x 4 = 60 small cakes during that time. 370 small cakes are needed for the party so \( \frac{370}{60} \) = 6\(\frac{1}{6}\) cooks are needed to bake the required number of small cakes.

Because you can't employ a fractional cook, round the number of cooks needed for each type of cake up to the next whole number resulting in 2 + 7 = 9 cooks.

To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:

\( \sqrt{\frac{16}{16}} \)
\( \frac{\sqrt{16}}{\sqrt{16}} \)
\( \frac{\sqrt{4^2}}{\sqrt{4^2}} \)
1

By buying two shirts, Roger will save $34 x \( \frac{20}{100} \) = \( \frac{$34 x 20}{100} \) = \( \frac{$680}{100} \) = $6.80 on the second shirt.

So, his total cost will be
$34.00 + ($34.00 - $6.80)
$34.00 + $27.20
$61.20

Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):

5 + (3 + 3) ÷ 3 x 5 - 5²
P: 5 + (6) ÷ 3 x 5 - 5²
E: 5 + 6 ÷ 3 x 5 - 25
MD: 5 + \( \frac{6}{3} \) x 5 - 25
MD: 5 + \( \frac{30}{3} \) - 25
AS: \( \frac{15}{3} \) + \( \frac{30}{3} \) - 25
AS: \( \frac{45}{3} \) - 25
AS: \( \frac{45 - 75}{3} \)
\( \frac{-30}{3} \)
-10

The least common multiple (LCM) is the smallest positive integer that is a multiple of two or more integers.