Answer:
i) 21 and ii) 6
Step-by-step explanation:
i) If X=4 and Y=6, then:
3X+9, replacing X
3(4) + 9
12 + 9
21
ii) 4X-Y
4(3) - 6
12 - 6
6
Answer:
a) to determine how much Carl gets per hour, divide earnings by hours.
45 / 3 = 15
$15 per hour
b) Carl earns more per hour, because 15 is greater than 12.
Answer:
7y-3x-8z
Step-by-step explanation:
(3y+4y)+(2x-5x)-8z
7y+(2x-5x)-8z
7y-3x-8z
11.35-6:35= 5 hours
5 x 4 = 20 this is how many degrees it rose in 5 hours
-18+20 = 2 degrees
d is your answer
