Answer:
(a) and
Step-by-step explanation:
Required
Which of a to d has no solution
We have:
Sole for m
Divide by 6
So, we have:
and
implies that: m = -6,-7,-8,-9.....
implies that m = -3,-2,-1,0.....
<em>Hence, there is no solution</em>
2.16
r = cost of ruler
p = cost of pencil
r = 2p
6r + 15p = 2.16
Substitute 2p in place of r in 2nd equation and solve for p
6(2p) + 15p = 2.16
12p + 15p = 2.16
27p = 2.16
True ;]
increase
It increased because if the graph is proportional the graph will continue to increase the dollars since the company is earning dollars, not losing it.
5×6'3n=20
30'3n=20
3n=20-30
3n/3= -10/3
n= -3