Answer:
275 miles
Step-by-step explanation:
Let x be the number of miles Alan has to drive to get the same cost for tha two plans.
1 plan: total cost

2 plan: total cost

Equate them:

Answer: x=4/3
Step-by-step explanation:
Answer:
33
Explanation:
number of red cars
17.5
%
×
240
=
42
number of cars of other colors
=
240
−
42
=
198
number of black cars
1
6
×
198
=
33
Answer:
£290.70
Step-by-step explanation:
50x5=250
20x2=40
10x7=70
5x3=15
total = 375
375/1.29=290.697
= £290.70
Y=x^2+3x+4
y-x=7
x^2+3x+4-x=7
x^2+2x+4=7
(factor) x^2+2x-3=0
(x+3)(x-1)=0
X= -3 and X=1
(Plug x in for y)
Y= 1^2+3(1)+4
Y=8
(Check your answer on the second equation)
8-1=7
7=7 (Which is the solution)