A store makes a profit of 25$ on each graphing calculator it sells. how many calculators must the store sell to make a profit of at least $275? follow this ex.: x>25

11

Step-by-step explanation:

Hello!

Analyzing the key words in the word problem, we can see that it is representing division.

To make at least $275, n * 25 ≥ 275.

25n ≥ 275

n ≥ 11

Thus, we can see that the store must sell at least 11 calculators to fulfill the given requirements.

As an inequality, it is

Hope this helps!

yes

step-by-step explanation:

yes

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -