Answer:
x=70
Step-by-step explanation:

Answer:
x<150
Step-by-step explanation:
The amount of money (x) is less than 150 dollars
Answer:
the answer is B)
Step-by-step explanation:
if x = 5
f(x) = 2 x 5
f(x) = 10
so the answer is 10
Answer:
0 T, 4 D
1 T, 3 D
2T, 3D
3T, 2D
4T, 1D
5T, 1D
Step-by-step explanation:
So let's start with what we know!
Gift certificate = $100
T-shirts = $15 each
Dress shirts = $22 each
You need to buy at least one dress shirt in the process and at least spend $90
You can simply find the combinations by going in desmos and writing in:
15x + 22y <= 100
y > 1
15x + 22y >= 90
Find the combinations by looking at the integer values of x, and using only the integer values of y ( do not round them, just cut them down to the integer). Look where all the regions are shaded
The possible combinations are as follows
Note: I am going to initial t-shirts to T and dress shirts to D
0 T, 4 D
1 T, 3 D
2T, 3D
3T, 2D
4T, 1D
5T, 1D
Your welcome for the answer! If you have any questions, let me know in the comments section! If you could mark this answer as the brainliest, I would greatly appreciate it!
Option A
The system of equations are x + y = 40 and 10x + 7y = 360
<em><u>Solution:</u></em>
Let pounds of expensive coffee beans be x
Let pounds of cheaper coffee bean be y
Cost of 1 pound of expensive coffee bean = $ 10
Cost of 1 pound of cheaper coffee bean = $ 7
<em><u>The shop also sells a 40 pound mixture of the two kinds of coffee beans</u></em>
pounds of expensive coffee beans + pounds of cheaper coffee bean = 40
x + y = 40 ------ eqn 1
<em><u>The shop also sells a 40 pound mixture of the two kinds of coffee beans for $9 per pound</u></em>
pounds of expensive coffee beans x Cost of 1 pound of expensive coffee bean + pounds of cheaper coffee bean x Cost of 1 pound of cheaper coffee bean = 40 pound mixture x $ 9

10x + 7y = 360 --------- eqn 2
Thus the system of equations are x + y = 40 and 10x + 7y = 360
Thus option A is correct