Evaluate \(\displaystyle{\dfrac{3\times a + b}{c}}\) with \(\displaystyle{a=2.3}\), \(\displaystyle{b=\dfrac25}\), \(\displaystyle{c=\dfrac45}\)

Evaluate \(\displaystyle{\left(\dfrac{3}{5}\right) \times \left(m + \dfrac{n^2}{4}\right) }\) with \(\displaystyle{m = 1.3}\) and \(\displaystyle{n = 2}\)

Evaluate \(\displaystyle{\dfrac{\left(3 - \left(-4\right)x\right)^2}{y + 15}}\) with \(\displaystyle{x = 2}\) and \(\displaystyle{y=7}\)

Evaluate \(\displaystyle{\dfrac{-4 \times v}{c^2} + 2.6}\) with \(\displaystyle{v = -2}\) and \(\displaystyle{c = 4}\)

Evaluate \(\displaystyle{\dfrac{6 \times s - t}{t + w} }\) with \(\displaystyle{s = -1}\), \(\displaystyle{t = 2,}\) and \(\displaystyle{w = .75}\)

Evaluate \(\displaystyle{\dfrac{\left(5 - a\right)^2\times 4}{b + \dfrac{2}{3}} }\) with \(\displaystyle{a = 5.5}\) and \(\displaystyle{b = \dfrac{1}{6}}\)

Evaluate \(\displaystyle{\dfrac{2 - a \times b}{\left(-3\right)^2 - c + 0.5}}\) with \(\displaystyle{a = -2}\), \(\displaystyle{b = 0.75}\), and \(\displaystyle{c = 2.5}\)