Answer:
$28
Step-by-step explanation:
Each round trip will be double the price of a one-way trip, so will be ...
2 × $3.50 = $7.00
Diego and his 3 friends will require a total of 4 round-trip tickets for a cost of ...
4 × $7.00 = $28.00
B.)155
a1+d(n-1)
a1+d(6-1)=50
a1+5d=50
a1+d(11-1)=85
a1+10d=85
a1=50-5d
(50-5d)+10d=85
50-5d+10d=85
5d+50=85
5d=35
d=7
a1+7(6-1)=50
a1+35=50
a1=15
15+7(n-1)
15+7(21-1)
15+7(20)
15+140=155
Answer:
minimum at (2, - 2 )
Step-by-step explanation:
The equation of a parabola in vertex form is
f(x) = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
If a > 0 then the vertex is a minimum
If a < 0 then the vertex is a maximum
Given
f(x) = 2x² - 8x + 6 ← factor out 2 from the first 2 terms
= 2(x² - 4x) + 6
To complete the square
add/ subtract ( half the coefficient of the x- term)² to x² - 4x
f(x) = 2(x² + 2(- 2)x + 4 - 4) + 6
= 2(x - 2)² - 8 + 6
= 2(x - 2)² - 2 ← in vertex form
with vertex = (2, - 2) and a > 0
Thus minimum at (2, - 2 )
Answer:
Step-by-step explanation:
2y^4 x 5y^3 = 10y^7
3gh^2 x 4g^3h^3 = 12g^4h^5