The table shows the admission fees to one conservatory at Gardens by the Bay. Mr Tan and his friends planned a group visit for three adults and nine children. Find the amount of money they had to pay for their tickets. per adult $2.
Per child $8.​

78$

Step-by-step explanation:

3 adults, 2 dollars per adult. Multiply. 3(2) = 6

9 children, 8 dollars per child. Multiply. 9(8) = 72

Add to get total sum of money they needed to pay. 72+6 = 78

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.