It is suitable to start with a "let ..." statement defining the meaning of the variable(s) you use in the problem. Here, problems 1, 2, 4 have you multiply the variable by some constant representing a unit rate. In problem 3, you additionally have to perform some math to find an amount remaining.
1) Let s represent the number of shirts purchased at 24.95 each. Then the total cost in dollars is ...
... 24.95s
2) Let t represent the number of trees watered. Then the total number of gallons of water used is ...
... 30t
3) Let q represent the quantity of marbles given away. Then the number remaining is ...
... 48 - q
4) Let p represent the number of pairs of pants purchased at 32.95 each. Then the total cost in dollars is
... 32.95p
$44.80=($35+X)(1-0.3)
44.80 is the final total
You need to add the glove and hat cost to get a subtotal (35+x) and then multiply by what is left after the discount 30% off will leave 70% to pay, so in this equation 1-0.3 leaves 0.7 to multiply against the subtotal to get the total before tax of 44.80
Answer:
(1, 2), (-2, -1)
Step-by-step explanation:
We can choose x = 1 and find y:
y = 2/1 = 2
(x, y) = (1, 2)
We can choose x = -2 and find y:
y = 2/(-2) = -1
(x, y) = (-2, -1)
The answer for this problem is C. 20
Answer: 16.7%
There are 6 ways we can roll doubles out of a possible 36 rolls (6 x 6), for a probability of 6/36, or 1/6, on any roll of two fair dice. So you have a 16.7% probability of rolling doubles with 2 fair six-sided dice.
Second Answer : 6/36
Out of the 6^2 = 36 outcomes, there is only 6 that are doubles (double 1,double 2,… double 6). Therefore the probability is 6/36 i 1/6.