Answer:
A. you can make purchases even when you don't have cash
Step-by-step explanation:
A credit card is used to buy things, you can pay those things when the "cut" of the balance on tour credit card is due, for example there are credita cards that give you a 28 days interests free day and you would have to pay it by the 4th of the next month, no matter when you buy it, for example if you buy a TV on the 25th of july, you have to pay your credit card on the 4th of august so it won´t generate interests, this could help you to buy things when you don´t have cash but you know you´ll have it by the next month.
To solve this, do Betty's points (68) and subtract them from Debbies's (e) to get the expression 68-e.
The difference (subtraction) of 6 times a number (x represents number) and 7. This gives us 6x-7. That is equal to five times (multiplication) the sum (addition) of the number, x, and 4. This gives you = 5(x+4) and combined gives us B, 6x-7=5(x+4).
Answer: c.
Step-by-step explanation:f(x={28x+4,0<x<10
{22x+8,x_>10
Answer:
a = $13.5
Step-by-step explanation:
Let a = adult tickets
Let c = children tickets
Translating the word problem into an algebraic equation;
<u>For the Martinez family;</u>
2a + 3c = $60
<u>For the Wright family;</u>
3a + 5c = $95.5
Thus, the simultaneous equations are;
..........equation 1
.........equation 2
We would use substitution method to solve;
From equation 2, we make a the subject of formula;
3a = 95.5 - 5c
a = (95.5 - 5c)/3
<em>Substituting the value of "a" into equation 1, we have;</em>
2[(95.5-5c)/3] + 3c = 60
Multiplying all through by 3;
2(95.5 - 5c) + 9c = 180
191 - 10c + 9c = 180
191 - c = 180
c = 191-180
c = $11
To find the value of a;
2a +3c = 60
<em>Substituting the value of "c" into the equation, we have;</em>
a = $13.5
<em>Therefore, the cost of an adult movie ticket is $13.5. </em>