a restaurant serves a vegetarian and a
chicken lunch special each day. each
vegetarian special is the same price. each
chicken special is the same price. however
the price of the vegetarian special is different
from the price of the chicken special.
o on thursday, the restaurant collected
$467 selling 21 vegetarian specials and
40 chicken specials.
o on friday, the restaurant collected $484
selling 28 vegetarian specials and 36
chicken specials.
what is the cost of each lunch special?

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

parallelogram is the   answer