Answer:
- 57
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a + (n - 1)d
where a is the first term and d the common difference
Here a = 13 and d = - 2.5, thus
= 13 + (28 × - 2.5) = 13 - 70 = - 57
440 callories in 4 servings; 300 serving in 3 servings
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We need to solve the equation to find x
We will simplify the left side by multiply each bracket by the number before it
-3(x - 6) = -3(x) + -3(-6) = -3x + 18
4(x + 1) = 4(x) + 4(1) = 4x + 4
Now put them on the left side
Add the like terms on the left side
Now we will collect x on the right side and the numbers on the left side
Subtract x from both sides
Add 14 to both sides
Divide both sides by 6 to find x
The value of x is 6
