Answer:
b) 46⅕
d) 231/5
Step-by-step explanation:
2⅕ = 11/5
(11/5) × 21
= 231/5
= 46⅕
46 1/5 inches tall
We know each board is 2 1/5 inches high
Change this to an improper fraction
2 1/5 = (5*2+1)/5 = 11/5
Multiply this by the number of boards
11/5 * 21 = 231/5
Change this back to a mixed number
5 goes into 231 46 times
46*5 = 230 there is 1 left over
B( 3/2
10.4 or 52/5 or 10 2/5
y = -1/2 + 1 is the y=mx + b equation
